It was Abe's mom who was supposed to be in MO...

Yes, but I read one of Max the Mug's old posts in which he said Munch's mom was also supposed to be there. Here: http://www.oddworldforums.net/showpo...16&postcount=3

That post is five years old. It’s really cute that you trust me so much that any two words I said an age ago can be taken as gospel truth by you, but I am not normally a primary source of information. There is only one mention of Munch’s mother; in its entirety it reads:

What? You want to hear about Munch? Sure. Munch may think he’s the last of his kind, but really ….

This is in the context of a designer diary that has just devoted several paragraphs to describing Lady Margaret and half a sentence to tease us about Sam. Notice that this fragment doesn’t even explicitly reference Munch’s mother. Be aware also that it’s written by Paul O’Connor, who made it quite clear that he would be disseminating misinformation.
Note that it doesn’t say

Doesn't say what?!

I have always dreamt that Munch's Exoddus was the game about the repopulation of Gabbits on Oddworld.

Please Max, continue with your theory.

I seem to have left in a segment of an earlier draft; that’s my full story, folks.

I suspect that the rest of that sentence would be "but really there's a can of Gabbiar that he can use to repopulate the Gabbits".

Let's not start any theories about a wild population of Gabbits living on an lost plateau...

didnt they say that their next game would take years with schedulaing and the fact with citizen seige

We're just merely speculating.

On the other hand, there is supposed to be a real continuation of MO, since SW isn't really part of the Quintology (same goes with Fangus). Whether it will be with Munch or not... that's a totally different story.

Oh wait... I forgot about Squeek's Oddysee. But still there could be something else in between or after SO.